Observational Signatures of TeVeS
Eva Sagi, Racah Institute of Physics
Observations on all scales point to a gap in our understanding of
gravitation; from the Pioneer anomaly in the solar system, through the
shape of galaxy rotation curves and the amount of gravitational
lensing by galaxy clusters, to the accelerated expansion of the
universe. This observed discrepancy between the dynamics and the
distribution of the visible matter in the universe is usually ascribed
to dark matter and dark energy. However, it is possible that both dark
matter and dark energy are manifestations of a theory of gravity
different than General Relativity. One such theory is TeVeS, suggested
by Bekenstein in 2004. I will present several results on the match up
of TeVeS with observations. Surprisingly, its PPN parameters show it
to be indiscernible from GR in the solar system; however, its
gravitational waves exhibit an unusual behavior, which can be traced
back to the theory's MOND origin.